Silo-door



SILO DOOR.

AFPLfcATloN msn BECA, 1919.

Patntea Fab. 8, M921,

7 ///2 L Cs R3 y Gem" e {nfgpf N 01M ms GEORGE A. GRATJF, 03E SUTH PLYMOUTH, NEVI YORK.

SIDO-DOOR.

lil ,368,1@ 7.

Speccation of Letters Patent.

yatented Feb. 8, 1921.

Application filed December 4, 1919. Serial No. 342,411.

To ZZ whom it' may concern.'

Bc it known that ll, GEORGE A. Gitaar, a citizen oi the United States, residing at South. idlynnnith, in the county of Chenango, State of New `lorlr, have invented certain new and useful improvements in Silo- Doors; and do hereby declare the 'following to be a full, clear, and enact description ot the invention, such as will enable others skilled in the art to which it appertains to malte and use the same.

This invention relates to combined securing and ladder attachments ior silo doors, 1t being the object of the invention to provide an attachmentto be carried wholly by the silo door but which when utilized as a ladder rung, will tend to draw the door outwardly and thus seat it more securely in the door opening, as distinguished :trom tending to dislodge the door into the silo, so that there will be no danger to the user incident to slipping ot the silo door from place due to the weight of the user as he mounts the ladder that is formed by the succession ot attachments on the succession of door sections.

fr further object ot the invention is to provide a construction which will serve to prevent accidental falling of the door section into the silo when the door is being put in place or is being removed. h

I@ther objects and advantages will be apparent trom the following description when 'taken in connection with the accompanying drawingn in the drawing:

Figure 1 is an elevation ot a portion ot a silo showing the improved door in place,

Fig. 2 is a vertical sectional view taken on the line 2-2 ci' Fig. 1, through the door and retaining or supporting means.

Referring particularly to the accompanying drawing, 10 represents the wall of the silo, and 11 the opening through which silage .is introduced into the silo, and in which is disposed. the door 12. This door has its upper and lower edges beveledmt'or prov1ding a leak prooil jointwith the ad]acent doors above and below it. rihe side edges of the door, as well as the vertical sides of the opening are correspondingly beveled.

Secured to the outer tace of the door, and projecting outwardly, are the brackets 13. To each bracket is pivotally connected 011e arin of a yoke 14, the transverse portion of V" which adapted to serve as one rung of a ladder, of which the corresponding members ot the other doors of the silo' form the ren'iaining rungs. rlthis enables a person to climb to any height on the silo for the purpose ot' removing the doors when the ensilage is to be removed. Secured to the lower ends of the arms of the yoke is a transverse bar 15, the ends of which entend beyond the sides of the opening of the silo and bear against the outer 'tace of the wall.

The transverse portion of each yoke serves as a handle by means of which the yoke is rocked so that the door may be lifted out of the opening.

Upon reference to the drawings it will be noted that when a person stands upon the cross member ot the yoke, the end portions of the cross bar 15 are forced against the outer tace of the silo at both sides ot the door opening and that the beveled door section 12 tends to draw outwardly into closer relation to the corresponding bevels of the sides of the door opening and the upper edge of the door section next below. ril`hus, the door section that bears the weight of a person cannot slip inwardly from place with corresponding danger to the person in question. rthe same remarks apply to the upper attachment that may be grasped by a person in climbing the silo.

Again, in putting a door section in place, it sometimes slips and drops into the silo, causing much annoyance and loss of time. `With the extensions of the cross bar 15, the dropping of the door section into the silo is, of course, prevented and furthermore after one door section has been secured in its final position, another door section may be hung within the silo, ready to be given its then slight adjustment into its closing position.

'What is claimed is:

The combination with a silo having a door opening and a door section adapted to be drawn into the door opening from within the silo and means for preventing outward movement of the door section directly from its closing position, ot' a yoke comprising parallel arms and a ladder rung forming transverse portion connecting their upper end, said arms being pivotaily connected intermediate of their ends with the outer 'face ot the door section and extending downwardly 'from their said connecting member,

end e. cross bar connecting alle free ends of the arms and extending transversely of lthe outer face of the door section and materially across the outer fece of the silo at both sides of its door opening, whereby to deliver pressure to he silo Wall, and to prevent dr0pping of the door into the silo when released.

En testimony whereof, l aHX my signature, in the presence 0i" two Witnesses.

GEORGE A. GRAEF.

Vtnesses ETHEL M. SILL, DAVID F. LEE. 

